Sound-record composition.



J. W. AYLSWORTH.

SOUND REGORD COMPOSITION.

APPLICATION FILED MAY 25, 1907.

944,474. Patented De0.28,1909.

JONAS W. AYLSWORTH,

JERSEY.

or EAST ORANGE, NEW JERSEY, PATENT COMPANY, or wEsT ORANGE, NEw JEnsEY,

ASSIGNOR TO NEW J ERSEY A CORPORATION OF NEW I SOUND-RECORD COMPOSITION.

Specification of Letters Patent.

Patented Dee-28, 1909.

Application filed May 25, 1907. Serial No. 375.725.

To all whom it may concern:

Be it known that I, J ONAS W. AYLSWORTH, a citizen of the United States, residing at 223 Midland avenue, East Orange, county of Essex, and State of New Jersey, have invented certain new and useful Improvements in Sound -Record Compositions, of which the following is a description.

In Letters Patent, No. 920,245, granted May 4th, 1909, Serial No. 342,317, I describe certain new and useful improvements in phonogra h record compositions in which asphalt is a ixed with a metallic stearate, such as stearate of lead, and preferably also with a resin gum such as copal gum, resulting in an excessively hard, tough, and durasi d particularly as an improvement on this composition, but, it may be used in conneetion with 'any composition in which stearic acid (in which expression is included its well known equivalent palmitic acid) or metallic stearates are used. For instance, the improvements may be" employed in connection with the manufacture of the well known composition which is now used for the production of talking machine blanks for making original or master records and consisting of stearates and palmitates of soda and alumina, together with an antihygroscopic ingredient, such as ceresin; or the improvement may be employed, for example, in the manufacture of compositions for making duplicate sound records, such as I describe in my Patent No. 782,375 of Feb ruary 14th, 1905, in which carnauba wax is added to the blank material in such a way that the free alcohols of the wax will combine with the free stearic acid of the composition to form a hard wax-like compound ether, which gives to the composition many of its desirable properties; or instead, the improvements may be employed in connection with the special composition disclosed in Letters Patent No.- 880,707, granted March 3, 1908, in which I disclose the employment of ebonite. or montan wax, as available substitutes for the caruauba wax of the composition of my Patent No. 782,375. Preferably, however, the improvements are designed for use in connection with compositions as disclosed in my wpatent first above referred to as I seek to produce a composition which shall be excessively hard and the fatty acid which I shall 'ble material. My present invention is dei may e used either alone or in combination as being a wax-like substance of a ably prepared from tough, while at the same time having a smooth surface in order to make it practicable to make commercial records with a considerably finer pitch or record groove so as to increase the length of the reproduction. The invention is based on the discovery'that a certain fatty acid, presently to be mentioned, may be substituted in these compositions for the stearic acid or palmitic acid and which results in the production of very much harder and more durable compositions an available material for use in this art present in montan wax and refer to as montan acid. It

with stearic or palmitic acid.

In my Patent No. 880,707 above referred to I refer to montan wax as being supplied a in this country by the Strohmeyer & Arpe' York city, dark polished brown color, somewhat resembling discolored carnauba wax, and as being probbituminous brown coal Company, at 64 Pearl street, New

; than when stearic or palmitic acid is used. I The fatty acid which I have discovered as under the process disclosed in U. S. Patent No. 689,381 of December 24th,. 1901. A highly refined form of montan wax is also sold in this country under the trade-name Spermatine and contains from 7 5 to 90% {of a fatty acid of very high molecular weight, which I refer to as montan acid. In obtaining the montan acid from the montan wax or spermatine, I may combine the same with a base such as lead oxid or with an alkali such as soda or potash, or with an alkaline earth, such as lime, thereby forming a metallic soap with the free montan acid. The hydrocarbon ingredient remaining in the soap may be then removed by distillation with superheated steam at a temperature from 500 to 750 F. with or without vacuum; or the hydrocarbon may be extracted by a suitable solvent such as naphtha, petroleumether, or benzene, I consider it important to remove this hydrocarbon ingredient when the montan acid is to be used in connection with compositions in which asphalt is used, since its presence interferes with the miscibility of the asphalt. The soap thus formed and preferably with the hydrocarbon ingredient removed is now decomposed in any 0 the well known ways for recovering the free v fatty acid therefrom. The montan acid thus obtained may be used in any of the compositions in which stearic acid is used with the important advantage that the compositions made. therefrom are very much harder and very much more durable than when stearic acid is "used.

- It will be understood that in making the soap composition disclosed in my Patent No. 920,245 above referred to, in which stearate of lead is referably used in combination with asphalt, the metallic soap originally formed with the free fatty acid of the montan wax or spermatine may be a lead soap; or, in other words, the s ermatine or montan wax may be combined w1th lead oxid to form a' lead soap with the free montan acid. After the hydrocarbon ingredient has been separated from this lead soap, the latter need not be decomposed for the recovery of the free fatty acid, but may be used directly as an ingredient in the composition in the same way as the stearate of lead. This of course is the desirable method of making this par ticular composition, as in this Way the step of decomposing the soap and recovering the freefatty acid is dispensed with.

. Attention is hereby directed to the accompanying drawing, formingpart of this application, and illustrating a conventional record tablet having inscribed thereon the ingredients of a composition embodying my invention.

Having now described my invention, what I claim asnew and desire to secure by Letters Patent is as follows: I

1. A composition suitable for the manu- -facture of phonograph records which. contains the fatty acid obtained from montan wax or spermatine, substantially as setforth. 2. As aningredient for use in the make-up of sound record compositions, a metallicsoap of the free fatty acidobtained from montan wax or spermatine, substantially as set forth.

4. An improved composition for sound records, comprisin a mixture of asphalt and a metallic soap 0' the free fatty acid obtained from montan wax or spermatine, substantially as set forth.

5. An improved composition for sound records, comprisin a mixture. of asphalt and a' lead soap of t e freeffatty ac1d obtained from montan wax or spermatine, substantially as set forth. a

6. An improved composition for sound records, comprising a mixture of asphalt, a

metallic soap of the free fatty acid-obtained from montan wax or spermatine and a resin giun, substantially as set forth. 1

- 7. An improved composition for sound records, comprising a mixture of asphalt, a lead soap of the free fatty acid obtainedfrom montan Wax or spermatine, and a res n gum,

substantially as set-forth.

8. An improved composition for sound records, comprising a mixture of asphalt,- a

metallic soap of the free fatty acid obtained from montan wax or spermatine, andcopal gum, substantially as set forth.

9. An improved composition for sound records, comprising a mixture of asphalt, a lead soap of the free fatty acid obtamed from montan wax or spermatine, and copa-l gum, substantially as set forth.

This s ecification signed and witnessed this 7th ay of May 1907.

JONAS W. AYLSWORTH. Witnesses:

FRANK LQDYER,

FRANK D. LEwIs. 

